It's not an AWOS, not FAA Approved, and not even located
on the airport I fly out of - but about a mile away there
is a webcam that is user-controllable. I have found it to
be quite useful in determining what the weather is like
there when at a distance. I'd guess that a similar device
could be installed for $2-3,000 plus the cost of an internet
connection - less if you scrounge or have someone who will
donate space/power/connectivity. Every airport should have
one IMHO.

David Johnson